Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14623 |
Light and nutrient control phytoplankton biomass responses to global change in northern lakes | |
Bergstrom, Ann-Kristin1; Karlsson, Jan1,2 | |
2019-06-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
卷号 | 25期号:6页码:2021-2029 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden |
英文摘要 | Global change affects terrestrial loadings of colored dissolved organic carbon (DOC) and nutrients to northern lakes. Still, little is known about how phytoplankton respond to changes in light and nutrient availability across gradients in lake DOC. In this study, we used results from whole-lake studies in northern Sweden to show that annual mean phytoplankton biomass expressed unimodal curved relationships across lake DOC gradients, peaking at threshold DOC levels of around 11 mg/L. Whole-lake single nutrient enrichment in selected lakes caused elevated biomass, with most pronounced effect at the threshold DOC level. These patterns give support to the suggested dual control by DOC on phytoplankton via nutrient (positively) and light (negatively) availability and imply that the lakes' location along the DOC axis is critical in determining to what extent phytoplankton respond to changes in DOC and/or nutrient loadings. By using data from the large Swedish Lake Monitoring Survey, we further estimated that 80% of northern Swedish lakes are below the DOC threshold, potentially experiencing increased phytoplankton biomass with browning alone, and/or combined with nutrient enrichment. The results support the previous model results on effects of browning and eutrophication on lake phytoplankton, and provide important understanding of how northern lakes may respond to future global changes. |
英文关键词 | dissolved organic carbon nitrogen phosphorus phytoplankton whole-lake nutrient enrichment experiments |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000467441900013 |
WOS关键词 | DISSOLVED ORGANIC-CARBON ; NITROGEN DEPOSITION ; LIMITATION ; GRADIENT ; BACTERIOPLANKTON ; PHOSPHORUS ; BACTERIAL ; CLIMATE ; TRENDS ; IMPACT |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/183818 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Umea Univ, Dept Ecol & Environm Sci, Umea, Sweden; 2.Umea Univ, Dept Ecol & Environm Sci, CIRC, Abisko, Sweden |
推荐引用方式 GB/T 7714 | Bergstrom, Ann-Kristin,Karlsson, Jan. Light and nutrient control phytoplankton biomass responses to global change in northern lakes[J]. GLOBAL CHANGE BIOLOGY,2019,25(6):2021-2029. |
APA | Bergstrom, Ann-Kristin,&Karlsson, Jan.(2019).Light and nutrient control phytoplankton biomass responses to global change in northern lakes.GLOBAL CHANGE BIOLOGY,25(6),2021-2029. |
MLA | Bergstrom, Ann-Kristin,et al."Light and nutrient control phytoplankton biomass responses to global change in northern lakes".GLOBAL CHANGE BIOLOGY 25.6(2019):2021-2029. |
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